Home / 90,985,831.20-136,478,746.80-65,157,798.60

Finding the Fourth Proportional to 90,985,831.20, 136,478,746.80 and 65,157,798.60

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Solution

The fourth proportional to 90,985,831.20, 136,478,746.80 and 65,157,798.60 is: 97,736,697.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985,831.20 : 136,478,746.80 = 65,157,798.60 : x
  2. Step 2: Convert to fraction form
    90,985,831.20/136,478,746.80 = 65,157,798.60/x
  3. Step 3: Cross multiply
    90,985,831.20x = 136,478,746.80 × 65,157,798.60
  4. Step 4: Simplify right side
    90,985,831.20x = 8,892,654,697,174,795
  5. Step 5: Solve for x
    x = 8,892,654,697,174,795/90,985,831.20
  6. Step 6: Final answer
    x = 97,736,697.90

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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.