Home / 145,879,480.40-218,819,220.60-85,264,005.20

Finding the Fourth Proportional to 145,879,480.40, 218,819,220.60 and 85,264,005.20

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Solution

The fourth proportional to 145,879,480.40, 218,819,220.60 and 85,264,005.20 is: 127,896,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,879,480.40 : 218,819,220.60 = 85,264,005.20 : x
  2. Step 2: Convert to fraction form
    145,879,480.40/218,819,220.60 = 85,264,005.20/x
  3. Step 3: Cross multiply
    145,879,480.40x = 218,819,220.60 × 85,264,005.20
  4. Step 4: Simplify right side
    145,879,480.40x = 18,657,403,163,098,348
  5. Step 5: Solve for x
    x = 18,657,403,163,098,348/145,879,480.40
  6. Step 6: Final answer
    x = 127,896,007.80

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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.