Home / 143,665,386.62-198,258,225.93-77,585,878.51

Finding the Fourth Proportional to 143,665,386.62, 198,258,225.93 and 77,585,878.51

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Solution

The fourth proportional to 143,665,386.62, 198,258,225.93 and 77,585,878.51 is: 107,068,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,665,386.62 : 198,258,225.93 = 77,585,878.51 : x
  2. Step 2: Convert to fraction form
    143,665,386.62/198,258,225.93 = 77,585,878.51/x
  3. Step 3: Cross multiply
    143,665,386.62x = 198,258,225.93 × 77,585,878.51
  4. Step 4: Simplify right side
    143,665,386.62x = 15,382,038,630,117,466
  5. Step 5: Solve for x
    x = 15,382,038,630,117,466/143,665,386.62
  6. Step 6: Final answer
    x = 107,068,508.24

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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.