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Finding the Fourth Proportional to 124,762,981.60, 187,156,978.80 and 42,871,074.40

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Solution

The fourth proportional to 124,762,981.60, 187,156,978.80 and 42,871,074.40 is: 64,310,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,762,981.60 : 187,156,978.80 = 42,871,074.40 : x
  2. Step 2: Convert to fraction form
    124,762,981.60/187,156,978.80 = 42,871,074.40/x
  3. Step 3: Cross multiply
    124,762,981.60x = 187,156,978.80 × 42,871,074.40
  4. Step 4: Simplify right side
    124,762,981.60x = 8,023,620,762,614,023
  5. Step 5: Solve for x
    x = 8,023,620,762,614,023/124,762,981.60
  6. Step 6: Final answer
    x = 64,310,909.05

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