Home / 145,185,920.40-217,778,880.60-72,626,509.20

Finding the Fourth Proportional to 145,185,920.40, 217,778,880.60 and 72,626,509.20

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Solution

The fourth proportional to 145,185,920.40, 217,778,880.60 and 72,626,509.20 is: 108,939,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185,920.40 : 217,778,880.60 = 72,626,509.20 : x
  2. Step 2: Convert to fraction form
    145,185,920.40/217,778,880.60 = 72,626,509.20/x
  3. Step 3: Cross multiply
    145,185,920.40x = 217,778,880.60 × 72,626,509.20
  4. Step 4: Simplify right side
    145,185,920.40x = 15,816,519,875,461,602
  5. Step 5: Solve for x
    x = 15,816,519,875,461,602/145,185,920.40
  6. Step 6: Final answer
    x = 108,939,763.80

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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.