Home / 121,618,807.80-167,831,880.48-65,863,775.40

Finding the Fourth Proportional to 121,618,807.80, 167,831,880.48 and 65,863,775.40

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Solution

The fourth proportional to 121,618,807.80, 167,831,880.48 and 65,863,775.40 is: 90,890,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,618,807.80 : 167,831,880.48 = 65,863,775.40 : x
  2. Step 2: Convert to fraction form
    121,618,807.80/167,831,880.48 = 65,863,775.40/x
  3. Step 3: Cross multiply
    121,618,807.80x = 167,831,880.48 × 65,863,775.40
  4. Step 4: Simplify right side
    121,618,807.80x = 11,054,041,280,894,364
  5. Step 5: Solve for x
    x = 11,054,041,280,894,364/121,618,807.80
  6. Step 6: Final answer
    x = 90,890,886.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.