Home / 145,185,879.40-217,778,819.10-72,626,468.20

Finding the Fourth Proportional to 145,185,879.40, 217,778,819.10 and 72,626,468.20

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Solution

The fourth proportional to 145,185,879.40, 217,778,819.10 and 72,626,468.20 is: 108,939,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185,879.40 : 217,778,819.10 = 72,626,468.20 : x
  2. Step 2: Convert to fraction form
    145,185,879.40/217,778,819.10 = 72,626,468.20/x
  3. Step 3: Cross multiply
    145,185,879.40x = 217,778,819.10 × 72,626,468.20
  4. Step 4: Simplify right side
    145,185,879.40x = 15,816,506,479,999,702
  5. Step 5: Solve for x
    x = 15,816,506,479,999,702/145,185,879.40
  6. Step 6: Final answer
    x = 108,939,702.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.